ferguson



'Pat'ente d Feb.- 7,- I899.

J. H. FERGUSON.

LEADING MACHINE.

(Application filed May 20 1897'.) v

2 Sheets-Sheet I.

(No Model.)

THE NORRIS PETERS 9a.. Pmiuumu. WASHINGTON. n. c.

No'. 6|9,0l6. Patented Fe'b."7 I899.

JJH. FERGUSON.

' LEADING MACHINE.

(Application filed May 20, 1897.) (No Model.) 2 SheetsSheet 2.

UNITED STATES PATENT OFFICE.

JAMES H. FERGUSON, OF NEW YORK, N. Y., ASSIGNOR TO THE LOVEJOY COMPANY, OF SAME PLACE.

LEADING-MACHINE.

SPECIFICATION forming part of Letters Patent No. 619,016, dated February 7, 1899.

' Application filed May 20, 1897. Serial No. 637,337. (No model- To all whom it may concern.-

Be it known that I, JAMES H. FERGUSON, of New York, (Brooklyn,) in the county of Kings and State of New York, have invented a new and useful Improvement in Leading-Machines, of which the following is a specification.

Myinvention-relates to an improvementin leading-machines in which the molds may be leaded with great rapidity and in which the lead is distributed evenly over the face of the molds.

The objects of my invention are, first, to pro- Vide a leading-machine which will perform the above results in which a cooling-chamber is provided intermediate the blower and airdischarge for reducing the temperature of the compressed air, so that the machine may be operated continuously irrespective of the temperature of the outside air; secondly, to provide means for preventing particles of Wax and other foreign substances which would be liable to obstruct the free passage of air through the discharge-opening from passing from the interior of the machine to the blower; thirdly, to provide means for detecting any obstruction in the machine which would change the air-pressure therein; fourthly, to provide a suitable stop mechanism under the control of the reciprocating movement of the moldcarrier for stopping the machine when the molds have been passed back and forth under the air-discharge opening and brush the required number of times, and, fifthly, to provide a new and improved means for hanging and operating the leading-brush.

A practical embodiment of my invention is represented in the accompanying drawings, in which Figure 1 represents a side View of the machine. Fig. 2 represents a vertical central section from front to rear through the same. Fig. 3 is a transverse vertical section in the plane of the line 3 3 of Fig. 2. Fig. 4 is a transverse horizontal section in the plane of the line 4 4 of Fig. 2, and Fig. 5 is a detailed View of the stop mechanism.

The body of the machine consists of a suitable casing A, having a forwardly-extended portion a and a'hopper-shaped bottom a, the said hopper-shaped bottom having an opening a extending transversely across the machine.

' The top of the main portion of the casing A is provided with a pair of doors a for gaining access to that portion of the casing, and the forwardly-extending portion a of the casing is provided with a suitable door of, through which the molds are inserted and removed from the machine.

An air-chamber Bis formed at the front of the casin g A, and the said air-chamber is pro vided' with an air-discharge outlet 7), opening into the interior of the casing.

The means which I have shown for forcing air through'the air-discharge opening and keeping the air cool is as follows: A pressureblower O, of usual construction, is located at the rear of the machine and is provided with anair-tube 0, extending to the bottom a of the casing A, for exhausting air from the said casing. The blower O is further provided with a discharge-tube c, which extends upwardly to a point a short distance above the casing A, where the said tube is extended forwardly and at the same time divided into a plurality of smaller tubes 0 The forward ends of these tubes 0 are connected with the air-chamber B by an air-tube 0 The tubes 0 are surrounded by a suitable casing D, which is provided with a suitable Water inlet (:1 and outlet d for permitting the circulation of water within the casing D around the tubes 0 The blower C is driven by a suitable drivepulley c The track upon which the mold-carrier is adapted to travel forward and back within the casing A and its forward extension consists of a pair of side rails e, extending along the side walls of the casing. The carrier for supporting the molds is denoted by E and is of tray form, the side edges of the carrier being engaged with the track-rails e, the said carrier being of any required depth. The means which I have shown for reciprocating the carrier consists of a rotary shaft F, extending from front to rear within the casing below the mold-carrier E, the said shaft being provided for a considerable distance with a right and left hand cross-threaded screw f, which is engaged by a traveling switch-nut e, carried by the carrier E. The carrier-reciprocating shaft F is provided at its rear end with a bevel-gear f, which is engaged by a bevel-gear 9 upon a cross-shaft G, which crossshaft is provided with a suitable belt-pulley g,which is driven by any suitable mechanism.

The mold-engaging brushis denoted by H, and'it maybe of badger or other suitable hair. The brush extends across the machine within the casing to the rear of and in close proximity to the air chest or chamber B. The brush is supported by the free ends of a pair of spring-arms h, and the other ends of the arms It being secured to the back of the casing A. The brush H is reciprocated vertically for causing the same to repeatedly engage the faces of the molds in the following manner: A shaft I extends across the machine within the casing A at a point a slight distance above the brush H, the said shaft having a drive-pulley '11, by means of which it may be driven by any suitable mechanism.

The shaft I is provided with a pair of eccentrics '5', which are engaged by suitable.

straps 71., connected to the brush-supporting arms h. The distance of the brush H from the molds is regulated by means of suitable screws 72?.

A drawer J, having a gauze ,bottom j, is mounted within the opening a in the bottom a of the casing A, the said drawer being removable through one side of the casing. This drawer is adapted to receive and retain small particles of wax, large grains of lead, or other foreign substances to prevent them from passing through the air-tube c to the blower O. The compressed air which is forced into the casing Ais thus kept pure and free fromforeign matter of all kinds.

A pressure-gage K is attached to the top of the casing A and communicates with the interior of the same, whereby the pressure of air within the casing can be at all times determined, and the amount of air fed to the machige may be regulated in accordance there- The mechanism which I have shown for shifting the several belts which drive the blower, the mold-carrier-reciprocating shaft, and the brush-actuating shaft is as follows:

A belt-shifter rod L is located upon one side of the casing A, exterior thereto, and is connected at its rear end to an angle-lever M, from which arod on runs to the belt-shifter. (Not shown.) The rod is provided with a suitable handle lat its forward end and near itsforward end is mounted to slide in a suitable bearing Z. The tendency of the rod L is to he slid backwardly for shifting the several belt mechanisms for stopping the machine. The rod L is held at the limit of its forward movement by means of a suitable spring-actuated pawl Z which is adapted to engage a notch Z in the rod L. The pawl Z is provided with a suitable tailpiece 1 which is adapted to be engaged by the tripping mechanism for releasing the pawl from the notch F.

The tripping mechanism is as follows: A

short shaft N is mounted to rock in suitable bearings in the side of the casing A, a portion of the said shaft extending into the interior casing and the other portion of the shaft extending exterior thereto. Theshaft N is provided with an arm n within the easing, which arm extends upwardly to within a short distance of the bottom of the carrier E. The carrier E is provided with a dog 6 which is adapted to engage the arm n and rock the shaft as the carrier moves forwardly, the said dog being pivoted so as to travel freely over the armnas the carrier E travels backwardly. After the arm n has been forced forwardly and the shaft N rocked the said shaft is returned to its normal position by means of a weighted arm n, secured to the.

shaft exterior to the casing. The weighted arm n is connected to an air-cushioning device for preventing the too rapid return of the shaft N, which cushion arrangement consists of a plunger-rod n pivoted to the arm n and having its lower end located within an air-cushioning chamber n The arm n is provided with a suitable pawl 72, which is adapted to engage teeth 0 upon the periphery of a disk 0, mounted upon the shaft N to rotate independently therefrom.v There are a number of these teeth 0, (in the present instance four are shown,) and each forward movement of the carrier E causes the said disk 0 to rotate the distance of one tooth, and as the shaft N returns to its normal position the pawl 97. will trip within the next succeeding tooth 0 the distance of another tooth. The disk 0 is provided with a trip ping abutment or lug 0, which abutment is caused to engage the tailpiece Z of the pawl l and depress the same as the disk 0 is rotated for releasing the rod L and permit it to slide backwardly for shifting the driving belts and stopping the machine. The disk O is provided with a number of depressions o l upon its periphery opposite the teeth 0, which depressions are engaged by a spring-latch of", 1 extending outwardly fromthe casing A,which ,spring-latch tends to yieldingly hold the disk ;0 against movement until positively rotated gby the rocking movement of the shaft N. I The disk 0 is provided with a thumb-piece i 0, by means of which the disk can be rotated, E so that the pawl Z will be tripped by the first, second, third, or fourth forward movement of 'the mold-carrier E. The movement of the :shaft N in one direction is limited by means of a set-screw n, which screws into-the bottom of the air-chamber n and engages the botitom of the rod 91 for limiting its downward Zmovement. This set-screw a accurately ad gjusts the throw of the pawl n, so as to per- ;mit it to rotate the disk 0 the distance of a single tooth each time the shaft N is rocked forwardly.

What I claim is 1. Inaleading-machine, a casing for receiv- }ing therein the molds to be leaded, the said casing having a hopper-shaped bottom and n n H I I J provided with an air-outlet opening in the bottom and a suitable air-inlet opening,means for forcing air to and withdrawing it from the casing and a screen-drawer inserted in the said outlet-opening in the bottom of the casing, substantially as set forth.

2. In a leading-machine, a casing, a traveling carrier Within the casing for the molds to be leaded, a plurality of flexible arms secured to the casing, a mold-engaging brush carried by the free ends of the said arms, a rotary cross-shaft and an eccentric carried thereby connected with the said arms for vibrating them whereby the brush is caused to repeatedly strike the face of the mold, substantially as set forth.

3. In a leading-machine, a casing, a traveling carrier mounted Within the casing, means for reciprocating the carrier back and forth JAMES H. FERGUSON.

Witnesses:

FREDK. HAYNES, C. S. SUNDGREN. 

